package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import com.atguigu.gulimall.product.vo.AttrGroupWithAttrsVo;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.service.AttrGroupService;
import org.springframework.util.StringUtils;


@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {

    @Autowired
    AttrService attrService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrGroupEntity> page = this.page(
                new Query<AttrGroupEntity>().getPage(params),
                new QueryWrapper<AttrGroupEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public PageUtils queryPage(Map<String, Object> params, Long catelogId) {

        String key = (String) params.get("key");

        QueryWrapper<AttrGroupEntity> attrGroupEntityQueryWrapper = new QueryWrapper<AttrGroupEntity>();

        if (!StringUtils.isEmpty(key)){
            attrGroupEntityQueryWrapper.and((obj) ->{
                obj.eq("attr_group_id",key).or().like("attr_group_name",key);
            });
        }

        if (catelogId == 0){
            IPage<AttrGroupEntity> page = this.page(
                    new Query<AttrGroupEntity>().getPage(params),
                    attrGroupEntityQueryWrapper
            );

            return new PageUtils(page);
        }else {

            attrGroupEntityQueryWrapper.eq("catelog_id",catelogId);
            IPage<AttrGroupEntity> page = this.page(
                    new Query<AttrGroupEntity>().getPage(params),
                    attrGroupEntityQueryWrapper
            );

            return new PageUtils(page);

        }



    }

    /*
    * 根据分类Id查询分组，以及各个组的所有属性
    * */
    @Override
    public List<AttrGroupWithAttrsVo> getAttrGroupWithAttrsByCatelogId(Long catelogId) {
        List<AttrGroupEntity> groups = this.list(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<AttrGroupWithAttrsVo> res = new ArrayList<>();

        for (AttrGroupEntity groupEntity:groups) {
            AttrGroupWithAttrsVo attrGroupWithAttrsVo = new AttrGroupWithAttrsVo();
            BeanUtils.copyProperties(groupEntity,attrGroupWithAttrsVo);

            List<AttrEntity> relationAttr = attrService.getRelationAttr(attrGroupWithAttrsVo.getAttrGroupId());

            attrGroupWithAttrsVo.setAttrs(relationAttr);

            res.add(attrGroupWithAttrsVo);
        }

        return res;
    }

}